反应详情

3.2 mmol of diethyl azodicarboxylate are added dropwise at 0° C. to 3.2 mmol of triphenylphosphine in 20 ml of THF, and the mixture is stirred at room temperature for a further 20 minutes. 2.4 mmol of 2-(2,3-difluoro-4-hydroxyphenyl)-5-(6-octyloxypyridin-3-yl)pyrimidine and 2.4 mmol of 2-(S)-fluorodecanol are then added, and the reaction mixture is allowed to stand overnight. After the solvent has been removed in vacuo, the crude product is chromatographed on silica gel 60 using dichloromethane/ethyl acetate 20:1 (v/v) as eluent and is recrystallized from acetonitrile, giving 1.2 g (86%) of colorless crystals, X 97 SC * 150.5 SA 161.5 I.

1. waitto stand overnight
2. customAfter the solvent has been removed in vacuo
3. customthe crude product is chromatographed on silica gel 60 using dichloromethane/ethyl acetate 20:1 (v/v) as eluent
4. customis recrystallized from acetonitrile